Bug report - ChimeraX ("WARNING: GBM is not supported with the current configuration. Fallback to Vulkan rendering in Chromium")

[grimmerc@…]

Good morning ChimeraX-team

I have a bug report for ChimeraX-1.12 - on Debian-13 with a legacy graphics card using the nouveau driver, the flatpak version of 1.12 crashes on startup (brief appearance of the ChimeraX window followed by a segmentation fault).

The problem seems to be related the use of the nouveau driver with the legacy Nvidia GTX650 graphics card (so not likely to manifest on many systems).  The solution is to use the Ubuntu 24.04 Linux x86-64 version instead.

Problem: ChimeraX-1.12 (FLATPAK version) crashes on startup with the error message "WARNING: GBM is not supported with the current configuration. Fallback to Vulkan rendering in Chromium."
Platform: Linux-6.12.94+deb13-amd64-x86_64-with-glibc2.41
ChimeraX Version: ChimeraX-1.12.flatpak
OpenGL version: 4.3 (Core Profile) Mesa 25.0.7-2
OpenGL renderer: NVE7
OpenGL vendor: Mesa
Python: 3.11.13
Qt version: PyQt6 6.10.2, Qt 6.10.0
Qt runtime version: 6.10.2
Qt platform: xcb
XDG_SESSION_TYPE=x11
DESKTOP_SESSION=lightdm-xsession
XDG_SESSION_DESKTOP=lightdm-xsession
XDG_CURRENT_DESKTOP=XFCE
OS: Debian GNU/Linux 13
Architecture: 64bit ELF
CPU: 8 Intel(R) Core(TM) i7-3770 CPU @ 3.40GHz
Cache Size: 8192 KB
Memory:
                     total        used        free      shared  buff/cache   available
      Mem:            15Gi       1.1Gi        13Gi        19Mi       1.1Gi        14Gi
      Swap:           29Gi          0B        29Gi

Graphics:
      01:00.0 VGA compatible controller [0300]: NVIDIA Corporation GK107 [GeForce GTX 650] [10de:0fc6] (rev a1)   
      Subsystem: Gigabyte Technology Co., Ltd Device [1458:3553]  
      Kernel driver in use: nouveau

Solution: Use the ucsf-chimerax_1.12ubuntu24.04_amd64.deb release instead.

Kind regards,
Craig Grimmer.

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Craig Grimmer
School of Agriculture & Science
University of KwaZulu-Natal
Private Bag X01
Pietermaritzburg
3209
South Africa
GPS coordinates -29.622139, 30.395819 / 29°37'19.7"S 30°23'45.0"E
Telephone +27-(0)33-260-5984/6345/5326
Facsimile +27-(0)33-260-5009
Email grimmerc@ukzn.ac.za
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